Ore-separator.



No. 654.66I. Patented .luly 3|,V |9110.

J. F. MITCHELL. Y `ORE SEPRATOH.

(Application filed Sept. 7,l 1899.)

(No ModeL) ATET FFIC".

JOHN F. MITCHELL, OF TOPEKA, KANSAS.

oRs-sPARAToR.

SPECIFICATION forming part of Letters1 Patent No. 654,661, dated July 31, 1900. Application filed September '7, 1899. Serial No. 729,758. (No model.)

To o/,ZZ whom it may concern;

Be it known that I, JOHN F. MITCHELL, a citizen of the United States, residing at Topeka, in the county of Shawnee and State of Kansas, have invented-certain new and useful Improvements in OreSeparators; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it ap-` pertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon,which form a part of this specification.

This invention relates to ore-separators, its object being to provide a simple and efficient apparatus by which the fine particles of metal may be separated from rock and earthy subL stances.

The invention consists of the novel details of construction and combination of parts hereinafter described and claimed h In the accompanying drawings, Figure 1 is a sectional elevation of an apparatus made in accordance with my invention; and Fig. 2 is a plan view, partly broken away, of the lower portion of such apparatus.

Similar numerals and letters of reference indicate like parts in both iigures.

1 indicates the pan, the bottom 2 of which is slightly dished, as shown in Fig. 1. The pan is supported upon a spider comprising the central hub 3 and radiating arms a, and a series of strengthening-bars h are secured to the outer ends of arms a and the wall of the pan. The hub is rovided with a series of vertical openings through which the water and earthy matter are discharged, as will be referred to hereinafter. The lower end e of the hub is ball-shaped and seats in a cup or socket fof a block 4, seated upon a suitable foundation g. 'A conical hood or shield h is secured upon the ball-shaped end of the hub and serves to deiiect the water and earthy matter passing through the openings d into a trough z' and protects the parts e and f.

A shaft 5 is rigidly secured at its lower end t-o the hub 3 and provided at its upper end with a ball-shaped head 6, which seats in a cup or socket j, eccentrieally mounted on a disk 7, which receives rotary movementfrom a holes d into the trough i.

shaft 8 through the gearing 9. A series of ropes or rods 10 are secured at their upper endsito aisleeve or collar 11 on the shaft 5, near to its upper end, and at their lower ends to the wall of the pan, holes l2 being provided for the passage of the cords.

A circular track 13 is supported u ponv blocks or sleepers c, below the pan, and the latter is provided with a wear-plate 14, adapted to engage the track.

l5 indicates a circular pipe vwith which a pipe 16 communicates andthrough which the pulverized ore mixed with water is fed to the circular pipe. The latter is perforated on its lower side and discharges into the pan near its vertical walls. The pipe 15 is suspended bya series of cords 17, secured at their upper ends to a suitable framework.

A telescopic tube 18 is secured at its lower end in the hub 3 above the openings d, and the ropes or cords 19 are secured to the inner section and run over pulleys 20, mounted on the shaft 5. By pulling on the ropes 19 the tube can be extended upwardly, as desired. In Fig. 1 it is shown extended to its full length.`

The operation is as follows: At the beginning the sections of the telescopic tube will be in their lowest position. The shaft 8 will `be started and this will impart a rotary movement to the disk 7, which ing what may be termed ing movement to the pan. The material to be treated being fed into the pan through the pipe 15 will by the movement of the pan be given a whirling movement, always tending from the periphery of the pan toward the center, about in a direction indicated by the arrows. The material will also be constantly agitated, so that only the heaviest particles, the metal, will settle to the bottom of the pan; but even these particles will tend to move toward the centerA lhe water and earthy matter will escape through the tube 18 and As soon as the particles of metal have accumulated around the tube 18 to such extent as to be in danger of washing over and out through the tube the latter can be partially extended and the operation continued until the metal particles have accumulated to a height nearly equal t that of the tube when fully extended. The

will result in giva circular rockmay have a free rocking movement, a shaft.

connected at itslower end to said support,a rotary disk to which the shaft, is eccentric;

in presence of two having a central support upon Whichiitr-,

ally connected at its upper endby a ball-andsocket joint, ropes connected at their lower ends to the pan and at their upper ends to the shaft, means to supply the material/co the pan near itsperiphery, a telescopic discharge-tube in the center of the pan surround- 'ing'said shaft, and operating-ropes connected to the inner section of said tube and running over pulleys on said shaft, substantially as vset forth.

In testimony whereof I afX my signature witnesses.

JOHN ninToHELL.

R. S. VAN4 SANT, E. M. MILLER. 

